210 x 297 millimetres = 8.26771654 x 11.6929134 inches
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210mm x 297mm
12" x 8.625"
55cm x 40cm x 20cm = 21.65 inches x 15.75 inches x 7.87 inches.
80mm x 120mm equates to 3.15 inches x 4.72 inches.
24 x 36 = 864 sq inches